Harkness, H. W. 1891- Elementary plane rigid dynamics / by H. W. Harkness - New York : Academic Press, [1964] - ix, 194 p. : ill. ; 21 cm. - Academic paperbacks. Physics . Includes index ISBN: USD 6.00 Subjects--Topical Terms: Dynamics, RigidMotionGravitations Dewey Class. No.: 531.36